Background

My old NAS built on top of CentOS has some performence issues and the disks are quit old now. The hardware is leftovers that is approx 8 years old and not highend at that time either. The disks age has worried my for a time and I would like to have higher redunduncy with raid1/mirrored disks.

After some research I decided to run my new NAS on FreeNAS, which has all the features I use, like: CIFS, NFS, FTP, SSH, Rsync, Unison, iSCSI and also easy administration and disk management.

This article will describe how I did setup Nagios or op5 Monitoring on my FreeNAS system. I assume basic knowledge of Nagios or op5 Monitor.

Installing nrpe

Nrpe is the agent that nagios and op5 Monitor uses to monitor a system from the inside.

From the webgui add group nagios and user nagios. User nagios should be a meber of group nagios.